Link back to original thread? GTX 1650 is the lowest-powered of the GTX 16 family. Does your card use a 6-pin, or no 6-pin? I wonder if your mobo can't supply enough slot power for the card? Is this a branded OEM system? Some SFF-esque rigs won't push the full 75W slot spec. Plus, I think that 75W is total of both +5V and +12V, I think that maybe it only pushes 65W on the +12V.
It could be purely a software issue too.
If you have a spare HDD or SSD around, here's what I would do. Pull the SATA plugs for your current HDD/SSD, temporarily attach the spare HDD/SSD, do a fresh install of Windows 10 1903 64-bit, using an install USB previously created with the MS Media Creation Tool, and then install the newest NVidia drivers. See if it has the same issues. If it does not, then the problem is probably with your OS install or drivers. If it does have the same problem, it could be a hardware issue. (Or still a Windows OS or driver issue, if your older install was also updated to newest versions.)